CN105905720B - A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw - Google Patents

A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw Download PDF

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Publication number
CN105905720B
CN105905720B CN201610158430.5A CN201610158430A CN105905720B CN 105905720 B CN105905720 B CN 105905720B CN 201610158430 A CN201610158430 A CN 201610158430A CN 105905720 B CN105905720 B CN 105905720B
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China
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fixture block
screw
ladders
painting
elevator
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CN105905720A (en
Inventor
孙学礼
王伟雄
谢超
黄国健
蔡少林
彭启凤
何山
李刚
邓贤远
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Guangzhou Academy of Special Equipment Inspection and Testing
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Guangzhou Academy of Special Equipment Inspection and Testing
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system

Abstract

The present invention provides a kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw, including upper fixture, lower fixture, ladders in painting screw, ladders in painting nut and force cell;The upper fixture, for clamping the top of selected traction rope section;The lower fixture, for clamping the lower section of selected traction rope section;The ladders in painting screw is moving up and down to be sleeved in the upper fixture;The ladders in painting nut is socketed on the ladders in painting screw and positioned at the top of the upper fixture;The force cell is installed between the ladders in painting screw and the lower fixture, for measuring the pulling force between the ladders in painting screw and the lower fixture.Lifting device has been modified to screw and has drawn high device by the present invention, and in use, screw, which draws high device, can solve the problems, such as hydraulic system load-measuring device poor synchronization;Device is drawn high using screw, overall cost can be reduced, reduces overall volume, mitigates overall weight.

Description

A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw
Technical field
The invention belongs to elevator detection technique field, and specifically, the present invention relates to a kind of electricity that formula is drawn high based on screw Terraced zero load coefficient of balance detection device.
Background technology
Coefficient of balance is the important performance indexes of traction-type driving elevator, is related to elevator running performance and hoisting motor Output power size.Between 2011 to 2013, the annual new clothes elevator of China is respectively:450000,52.9 ten thousand, 600,000, In cumulative year after year trend, wherein, traction elevator accounts for more than 90%, and the every portion of the new elevator of every traction-type should all be balanced and be Several testing and debuggings, coefficient of balance qualified just allow to come into operation.In addition, user, which carries out elevator decoration, influences balance system Several change, it is necessary to be balanced redeterminating for coefficient.Therefore, coefficient of balance detection be one amount of elevator industry it is big, wide, It is required that high technical work.But existing coefficient of balance detection method is cumbersome, error is big, there is more or less limitation.
The coefficient of balance method of inspection has the load method of inspection and the no-load method of inspection by there is no-load to be divided into.Existing electricity The coefficient of balance detection method of terraced inspection rule and hand turning method are that have load method of inspection, such method of inspection need to carry repeatedly Counterweight, labor intensity is big, detection operation time length.The coefficient of balance detection side of Chinese Anhui Special Equipment Test Inst's research and development Method, coefficient of balance detection method etc. of LiaoNing, China petrochemical industry university research and development be no-load method of inspection, but measurement accuracy, installation are simple Just property etc. has more or less limitation, it is difficult to be applied in actual field.
Chinese invention patent ZL201210121058 provides a kind of efficient, convenient, safe and reliable balance coefficient of elevator inspection Survey technology.But due to rope, pulley assembly, it is there are unreliability and the problems such as unbalance loading occurs.In consideration of it, patent Number a kind of elevator no-load coefficient of balance detection device is provided for the Chinese utility model patent of ZL201420516482.1, including it is upper Fixture, hydraulic cylinder, lower fixture and pulling force sensor, the upper fixture are installed on the top of the hydraulic cylinder, selected for clamping The top of the traction rope section taken;The hydraulic cylinder, is used for realization the lifting to the lower fixture;The lower fixture, installed in institute The lower section of hydraulic cylinder is stated, for clamping the lower part of selected traction rope section;The pulling force sensor, for measuring the hydraulic pressure The pulling force of cylinder.The utility model is used as load-measuring device using hydraulic cylinder, take full advantage of the job stability of hydraulic cylinder with The characteristics of reliability so that the detection device has the advantages that easy to operate and safe operation process performance is high, while hydraulic cylinder Obtained measure data precision higher.But in this method, the weight of oil pipe also in pulling force sensor measurement, has result necessarily Influence;And this method use to draw high formula oil cylinder, this kind of oil cylinder weight weight, volume are big, of high cost, to the steel wire rope of installation Section has higher requirement, limits the position of its measurement;Separated type hydraulic jack, oil pump, oil pipe volume are big, weight weight, no It is convenient for carrying.
The content of the invention
It is an object of the invention to provide a kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw, so that The detection device of the prior art is solved less due to rope, pulley assembly reason, there are technical problems such as unreliability and unbalance loadings, together When can solve detection device weight weight in the prior art, the big and of high cost technical problem of volume.
To solve the above-mentioned problems, the present invention is provided a kind of elevator no-load coefficient of balance that formula is drawn high based on screw and detects dress Put, its technical solution is as follows:
A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw, including upper fixture, lower fixture, ladders in painting Screw, ladders in painting nut and force cell;
The upper fixture, for clamping the top of selected traction rope section;
The lower fixture, for clamping the lower section of selected traction rope section;
The ladders in painting screw is moving up and down to be sleeved in the upper fixture;
The ladders in painting nut is socketed on the ladders in painting screw and positioned at the top of the upper fixture;
The force cell is installed between the ladders in painting screw and the lower fixture, for measuring the ladders in painting Pulling force between screw and the lower fixture.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Further include Data acquisition display instrument, is connected with the force cell, for reading the value of thrust of the force cell, and calculates institute Survey the coefficient of balance value of elevator.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:On described Fixture includes upper left fixture block and upper right fixture block, and the top of selected traction rope section is located at the upper left fixture block and upper right folder Between block;The lower fixture includes lower-left fixture block and bottom right fixture block, and the lower section of selected traction rope section is located at lower-left folder Between block and the bottom right fixture block.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Further include Connecting rod, between the force cell and the lower fixture.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Further include Bearing, an annular groove is equipped with the upper end of the upper fixture, the bearing is installed in the annular groove of the upper fixture, described The outer ring of bearing contradicts with the upper fixture and connects;The inner ring of the bearing is contacted with the ladders in painting nut;The bearing The internal diameter of inner ring is more than the diameter of the ladders in painting screw.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:The ladder Shape line nut is two, and the bearing is two, and the ladders in painting screw is two, and the connecting rod is two, the dynamometry Sensor is two;Wherein a set of ladders in painting screw, the connecting rod, the force cell are pressed from both sides installed in the upper left Between block and the lower-left fixture block, the another set of ladders in painting screw, the connecting rod, the force cell are installed on described Between upper right fixture block and the bottom right fixture block;Two force cells be respectively used to two ladders in painting screws of measurement with Pulling force between connecting rod.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Further include Interior cushion block, is equipped with the holding tank that multiple tracks matches with traction rope section on the interior cushion block;In the upper left fixture block, the upper right The clamping face center of fixture block, the lower-left fixture block and the bottom right fixture block is equipped with groove, and the interior cushion block is embedded in institute respectively State in the groove of upper left fixture block, the upper right fixture block, the lower-left fixture block and the bottom right fixture block and make the institute of the interior cushion block State holding tank and clamp hoist ropes.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Described The cell wall of holding tank is equipped with multiple tracks form friction pattern.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:The survey Force snesor is S type force cells.
The elevator no-load coefficient of balance detection device of formula is drawn high based on screw described above, more preferably:Described Upper left fixture block, the upper right fixture block, the both sides of the lower-left fixture block and the bottom right fixture block are equipped with mounting ear, and on mounting ear Equipped with installation through-hole, the upper left fixture block and the upper right fixture block are installed together by bolt and nut, the lower-left fixture block and The bottom right fixture block is installed together by bolt and nut.
Analysis understands that compared with prior art, the advantages of the present invention are:
First, the elevator no-load coefficient of balance improvement of detecting device provided by the invention that formula is drawn high based on screw no-load survey Device is measured, lifting device has been modified to screw and has drawn high device, in use, screw, which draws high device, can solve hydraulic pressure system System load-measuring device poor synchronization problem;And it is unreliable that the pulley for also overcoming tether assemblies in the prior art occurs Property;Furthermore device is drawn high using screw, overall cost can be reduced, reduces overall volume, mitigates overall weight.So that this The detection device that invention provides has the advantages that easy to operate and safe operation process performance is high, while screw draws high device and obtains Measure data precision higher.
2nd, the data acquisition display instrument that the present invention is set, it is possible to achieve the drawing of force cell described in real time inspection Force value and the coefficient of balance value for calculating surveyed elevator.
3rd, the upper fixture of the invention is divided into the upper left fixture block and the upper right fixture block, while the lower fixture point For the lower-left fixture block and the bottom right fixture block, when installation, can use the upper left fixture block and lower-left fixture block composition left half Part fixture, forms right half part fixture, so that the present invention can divide using the upper right fixture block and the bottom right fixture block For two entirety, when mounted, two parts are directly saved into the set-up time to dress.
4th, screw of the invention draws high device and is divided into the ladders in painting screw and the ladders in painting nut, can be in order to silk Bar draws high the operation of device, and can according to the characteristics of traction rope section, can traction rope section folded by flexible modulation length.
5th, the bearing that the present invention is set, can reduce the ladders in painting nut and the upper fixture to greatest extent Between frictional force.
6th, the present invention is in the both sides of the upper left fixture block, the upper right fixture block, the lower-left fixture block and the bottom right fixture block Equipped with mounting ear, and installation through-hole is equipped with mounting ear, so reduces the usage quantity of screw rod and nut, be also convenient at the same time Integral installation.
7th, the interior cushion block designed of the invention and the holding tank that is designed on the interior cushion block etc., can increase Friction coefficient;In addition the interior cushion block is placed directly within the upper left fixture block, the upper right fixture block, the lower-left fixture block and the left side In lower fixture block, the volume of the interior cushion block can be reduced.
8th, the force cell of the invention selects S type force cells, so can directly borrow S types dynamometry biography The installation position up and down of sensor, eliminates unnecessary connector so that overall structure of the present invention is more simple.
Brief description of the drawings
Fig. 1 is the structure of the elevator no-load coefficient of balance detection device that formula is drawn high based on screw of the preferred embodiment of the present invention Schematic diagram.
Fig. 2 is the structure diagram of the upper left fixture block of the preferred embodiment of the present invention.
Fig. 3 is the structure diagram of the interior cushion block of the preferred embodiment of the present invention.
Fig. 4 is the installment state of the balance coefficient of elevator detection device that formula is drawn high based on screw of present invention detection carriage Schematic diagram.
In figure, 1- upper fixtures;11- upper lefts fixture block;12- upper right fixture blocks;Fixture under 2-;21- lower-lefts fixture block;22- bottom rights press from both sides Block;3- ladders in painting screws;4- ladders in painting nuts;5- connecting rods;6- force cells;Cushion block in 7-;71- holding tanks;8- screw rods; 91- lift cars;92- counterweights.
Embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description.
As shown in Figure 1, the elevator no-load coefficient of balance detection device that formula is drawn high based on screw of the preferred embodiment of the present invention Mainly include upper fixture 1, lower fixture 2, ladders in painting screw 3, ladders in painting nut 4 and force cell 6, upper fixture 1, for clamping The top of selected traction rope section;Lower fixture 2, for clamping the lower section of selected traction rope section;Ladders in painting screw 3 can on Lower movement is sleeved in upper fixture 1;Ladders in painting nut 4 is socketed on ladders in painting screw 3 and positioned at the top of upper fixture 1;Dynamometry Sensor 6 is installed between ladders in painting screw 3 and lower fixture, for measuring the pulling force between ladders in painting screw 3 and lower fixture 2.
To sum up, the elevator no-load coefficient of balance detection device provided by the invention that formula is drawn high based on screw passes through setting Screw draws high device (i.e. the combination of ladders in painting screw 3 and ladders in painting nut 4) and can be achieved with inspection to elevator no-load coefficient of balance Survey, compared with detection device of the prior art, structure of the invention is relatively easy, and screw is drawn high device and is incorporated into electricity In terraced zero load coefficient of balance detection, it is possible to reduce the weight of whole detection device, it is smaller to draw high the construction of device due to screw, into And the volume of whole detection device is also reduced, while reduce the cost of whole detection device.
In order to the readings of real time inspection force cell 6, present invention additionally comprises data acquisition display instrument (not shown), It is connected with force cell 6, for reading the value of thrust of force cell 6, and calculates the coefficient of balance value of surveyed elevator.It is excellent Elect as, data acquisition display instrument and the connection mode of force cell 6 are wireless connection or wired connection.In normal condition Under, using wired connection mode, when run into be not convenient to use wired connection mode when, or had more using radio connection During convenient characteristic, data acquisition display instrument can be connected by the present invention with force cell 6 by radio connection.
In order to make upper fixture 1 effectively be clamped the top of selected traction rope section, upper fixture 1 includes upper left fixture block 11 and upper right fixture block 12, the top of selected traction rope section is between upper left fixture block 11 and upper right fixture block 12.It is further excellent Choosing, the clamping face of upper left fixture block 11 and the clamping face of upper right fixture block 12 are rectangular parallelepiped structure, the clamping face of upper left fixture block 11 and The long ﹥ high ﹥ wide of the clamping face of upper right fixture block 12 are (in Application No. CN201210121058.2, entitled elevator balanced system In the patent of invention of number detection device, the long ﹥ wide ﹥ high of fixture block);, can in the case of holding area identical (i.e. short transverse) To save material;In the case where width is identical, holding area can be increased.
In order to make lower fixture 2 effectively be clamped the lower section of selected traction rope section, lower fixture 2 includes lower-left fixture block 21 and bottom right fixture block 22, the lower section of selected traction rope section is between lower-left fixture block 21 and bottom right fixture block 22.It is further excellent Choosing, the clamping face of lower-left fixture block 21 and the clamping face of bottom right fixture block 22 are rectangular parallelepiped structure, the clamping face of lower-left fixture block 21 and The long ﹥ high ﹥ wide of the clamping face of bottom right fixture block 22 are (in Application No. CN201210121058.2, entitled elevator balanced system In the patent of invention of number detection device, the long ﹥ wide ﹥ high of fixture block);, can in the case of holding area identical (i.e. short transverse) To save material;In the case where width is identical, holding area can be increased.
, it is necessary to consider how to make force cell 6 measure accurately in specific works, in this case, be not easy to by Force cell 6 is directly installed together with lower fixture 2, based on this, as shown in Figure 1, present invention additionally comprises connecting rod 5, installation Between force cell 6 and lower fixture 2.So force-measuring sensing can be realized as desired by the installation of connecting rod 5 at any time The placement of device 6, will not destroy the susceptibility of force cell 6.
In order to facilitate the setting of the present invention, meet the high request to the detection of elevator no-load coefficient of balance, as shown in Figure 1, Figure 2 institute Show, the present invention to ladders in painting nut 4 by rotating the lifting, it can be achieved that to lower fixture 2, and then force cell 6 can be surveyed Amount screw draws high the value of thrust of device.Detailed process is that the lower section of selected traction rope section is clamped with lower fixture 2, is used Fixture 1 clamps the top of selected traction rope section, and ladders in painting nut 4 is located exactly at the upper end of upper fixture 1 and to upper at this time Fixture 1 implements a top positioning, and when needing measurement screw to draw high the value of thrust of device, rotation ladders in painting nut 4, makes trapezoidal Line screw 3 moves up, and in this case, the selected traction rope section bending between upper fixture 1 and lower fixture 2 is not Stress, records the value of thrust of force cell 6, when equipped with data acquisition display instrument, can directly be adopted by data at this time Collect the value of thrust that display instrument reads force cell 6;The value of thrust of force cell 6 can be so learnt in real time.In saw During shape line nut 4, if by upper-end contact of the lower end of ladders in painting nut 4 directly with upper fixture 1, rotation can be caused difficult, gone out The problems such as existing stress contact, based on this, as shown in Fig. 2, present invention additionally comprises bearing (not shown), set in the upper end of upper fixture 1 There is an annular groove, bearing is installed in the annular groove of upper fixture 1, and the internal diameter of the inner ring of bearing is more than the straight of ladders in painting screw 3 Footpath, the outer ring of bearing is contradicted with upper fixture 1 to be contacted so that and the outer ring of bearing rotates or does not rotate at the same time at the same time with upper fixture 1, The inner ring of bearing is contacted with ladders in painting nut 4 so that the inner ring of bearing is rotated or do not turned at the same time at the same time with ladders in painting nut 4 It is dynamic.When rotating ladders in painting nut 4, the inner ring of bearing is rotated with ladders in painting nut 4, since the outside diameter of bearing inner race is more than trapezoidal The diameter of line screw 3, therefore ladders in painting screw 3 can be realized on bearing and moved up and down, and the outer ring ability of bearing and upper folder at this time The contact of tool 1, it is possible to carrying to lower fixture 2 is realized in the case of directly not contacted with upper fixture 1 in ladders in painting nut 4 Rise.In the present invention, bearing is preferably the combination of thrust bearing and zanjon bearing, can so reduce ladders in painting to greatest extent Frictional force between nut 4 and upper fixture 1.
Coefficient of balance during in order to accurately measure elevator no-load, ladders in painting nut 4 are two, and bearing is two, Ladders in painting screw 3 is two, and connecting rod 5 is two, and force cell 6 is two;Wherein a set of ladders in painting screw 3, connecting rod 5th, force cell 6 is installed between upper left fixture block 11 and lower-left fixture block 21, another set of ladders in painting screw 3,5 bars of connection, dynamometry Sensor 6 is installed between upper right fixture block 12 and bottom right fixture block 22;Two force cells 6 are respectively used to two ladders in painting of measurement Pulling force between screw 3 and connecting rod 5.
In order to which upper left fixture block 11 and upper right fixture block 12 are fixed together, as shown in Figure 1, present invention additionally comprises fastening Component, fastening assembly includes screw rod 8 and nut (not shown), nut are spirally connected with screw rod 8, by upper left fixture block 11 and upper right fixture block 12 Tighten together, upper left fixture block 11 and upper right fixture block 12 is clamped the top of selected traction rope section.Similarly fastening assembly Lower-left fixture block 21 and bottom right fixture block 22 are tightened together, lower-left fixture block 21 and bottom right fixture block 22 is clamped selected hoist ropes The lower section of section.The group of certain fastening assembly is several to be determined according to actual needs.
The upper fixture 1 and lower fixture 2 of the present invention is that steel material makes, and can ensure 1 He of upper fixture in this case The clamping rigidity of lower fixture 2, since hoist ropes is all that steel material makes, upper fixture 1 and lower fixture 2 are during clamping, meeting Hoist ropes is caused to damage, sometimes by hoist ropes pinch off, in order to avoid such case occurs, as shown in figure 3, the present invention also wraps Interior cushion block 7 is included, the holding tank 71 that multiple tracks matches with hoist ropes is equipped with interior cushion block 7;Fixture block 11, upper right fixture block in upper left 12nd, the clamping face center of lower-left fixture block 21 and bottom right fixture block 22 is equipped with groove, interior cushion block 7 respectively embedded in upper left fixture block 11, In the groove of upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22 and the holding tank 71 of interior cushion block 7 is set to clamp hoist ropes.It is excellent Selection of land, multiple tracks form friction pattern is equipped with the cell wall of holding tank 71, can further increase frictional force, further preferably, multiple tracks is rubbed Line is wiped to be uniformly arranged, to realize uniformity and stability to hoist ropes clamping.The interior cushion block 7 of the present invention is high molecular material It is made, interior cushion block 7 can be that rubber material makes, or nylon material makes, as long as having enough intensity and friction The big any material of power, so can further increase in cushion block 7 frictional force.Interior cushion block 7 and upper fixture 1, lower fixture 2 Mounting means is specifically, interior cushion block 7 is installed in the groove of upper fixture 1 and lower fixture 2, in interior cushion block 7 and hoist ropes contact When, first contacted by form friction pattern with hoist ropes, apply first of clamping;Contacted, applied with hoist ropes by the cell wall of holding tank 71 again Second clamps, and clamps hoist ropes finally by upper and lower fixture.It is empty in a kind of elevator of Application No. 201420516482.1 Carry in coefficient of balance detection device, be that friction plate is just fastened on upper folder by friction plate by the mounting hole of bolt through friction plate On tool and lower fixture, the architectural characteristic of friction plate can be so destroyed, in of the invention, interior cushion block 7 is embedded in upper fixture 1 with In fixture 2, mounting hole, the so architectural characteristic without cushion block 7 in destroying are not opened up on interior cushion block 7, reduces interior cushion block 7 and goes out The possibility now damaged.
In the present invention, it is necessary to consider how that reduction uses connector, considered based on this, as shown in Figure 1, Figure 2, Figure 3 shows, this The force cell 6 of invention is preferably S type force cells, so can directly borrow the installation up and down of S type force cells Position, eliminates unnecessary connector so that overall structure of the present invention is more simple.
As shown in Figure 1, Figure 2, Figure 3 shows, traction rope section is specifically described the present invention by taking steel wire rope as an example.
If steel wire rope is five;It is trapezoidal by 4, first, ladders in painting nut, 10, first, the bearing of upper left fixture block 11, first Line screw 3, first force cell 6, first connecting rod 5, lower-left fixture block 21 connect into and make left-half;Similarly, by the right side 4, second, ladders in painting nut, 10, second, the bearing ladders in painting screw 3, second of upper fixture block 12, second force cell 6, Second connecting rod 5, bottom right fixture block 22 connect into right half part.In connection procedure, according to the diameter of steel wire rope and installation position The length put, can select the length of connecting rod.According to the diameter and radical of steel wire rope, cushion block 7 in suitable is chosen, respectively It is fitted into upper left fixture block 11, lower-left fixture block 21, upper right fixture block 12, bottom right fixture block 22.
Five holding tanks of the interior cushion block 7 top of five steel wire ropes 5 being placed in upper left fixture block 11 and upper right fixture block 12 Between 71;The lower section of five steel wire ropes 5 is placed in the interior cushion block 7 of lower-left fixture block 21 and bottom right fixture block 22 five holding tanks 71 it Between;
In upper left, the both sides of fixture block 11 and upper right fixture block 12 are respectively equipped with mounting ear, fixture block 11 and upper right fixture block 12 in upper left Mounting ear on be provided with installation through-hole (not shown), installation of the screw rod 8 through upper left fixture block 11 and the mounting ear of upper right fixture block 12 Upper left fixture block 11 and upper right fixture block 12 are simultaneously applied fastening force by through hole using nut, and then to upper left fixture block 11 and upper right fixture block 12 Interior cushion block 7 apply chucking power, the tops of five steel wire ropes 5 is realized and is clamped;Equally, in lower-left fixture block 21 and bottom right fixture block 22 Both sides be respectively equipped with mounting ear, installation through-hole (not shown) is provided with the mounting ear of lower-left fixture block 21 and bottom right fixture block 22, Screw rod 8 is through the installation through-hole of lower-left fixture block 21 and the mounting ear of bottom right fixture block 22 and uses nut by lower-left fixture block 21 and bottom right Fixture block 22 applies fastening force, and then applies chucking power to the interior cushion block 7 of lower-left fixture block 21 and bottom right fixture block 22, to five steel wire ropes 5 lower section, which is realized, to be clamped;
After clamping, rotation ladders in painting nut 4 so that ladders in painting screw 3 is lifted up, and then can realize lower fixture 2 Lifting, so that the steel wire rope 5 that interlude clamps is in relaxed state, as shown in figure 4, the directly record of force cell 6 carries The weight of jacking elevator carriage 91 and counterweight 92, realizes the measurement of coefficient of balance.
In the following, the testing principle of the elevator no-load coefficient of balance detection device that formula is drawn high based on screw of the explanation present invention.
As shown in figure 4, when balance coefficient of elevator detects, it is top that lift car 91 and 92 priority of counterweight are moved to hoistway Position, installs the balance coefficient of elevator detection device.
When 91 zero load of lift car be placed in hoistway it is top and static when, install the present invention the electricity that formula is drawn high based on screw Terraced coefficient of balance detection device.If as shown in Figure 1, rotating ladders in painting nut 4 at this time, the rising of ladders in painting screw 3 is realized, then The stress of steel wire rope tapers into, and the stress of ladders in painting nut 4 becomes larger, if after steel wire rope is in the state that do not stress, elevator After the movement of carriage 91 stops, measurement obtains cage side weight G during static state.
Similarly, the amount of the stressing W of the counterweight 92 when obtaining static state.
Then, counterweight-side weight Ws of the cage side weight G with elevator when static by elevator when static, is updated to balance system In number algorithmic formula K=(W-G)/Q, K is coefficient of balance, and W is counterweight-side weight, and G is cage side weight, and Q is the specified of elevator Loading capacity.So as to obtain static balancing COEFFICIENT K=(W-G)/Q of elevator.
Specific detection method includes:
The step of clamping traction rope section, chooses draging as detection target above 91 side of lift car top or 92 side of counterweight Messenger section, the traction rope section is clamped using upper fixture 1 and lower fixture 2 respectively;
Screw is drawn high the step of device, and screw draws high device in upper fixture 1, passes through force cell 6, connecting rod 5 are fixed on lower fixture 2;
The step of reading data, operation ladders in painting nut 4 lifts the lift car 91 or the counterweight 92, in upper fixture After the traction rope section between 1 and lower fixture 2 is in the state that do not stress, the drawing of the ladders in painting nut 4 after measurement lifting Force value, counterweight-side weight W during cage side weight G or elevator static when obtaining elevator static state;With
The step of calculated equilibrium coefficient, by counterweight-side weight Ws of cage side weight G of elevator when static with elevator when static Substitute into coefficient of balance algorithmic formula K=(W-G)/Q, wherein, K is coefficient of balance, and W is counterweight-side weight, and G stresses for carriage Amount, Q are the nominal load capacity of elevator, obtain static balancing COEFFICIENT K=(W-G)/Q of the elevator of elevator.
Accordingly, in accordance with the invention it is possible to which the balance coefficient of elevator that formula is drawn high based on screw for providing a kind of no-load detects dress Put, which can detect coefficient of balance during elevator static state safely, accurately, easily to operate.
Analysis understands that compared with prior art, the advantages of the present invention are:
First, the elevator no-load coefficient of balance improvement of detecting device provided by the invention that formula is drawn high based on screw no-load survey Device is measured, lifting device has been modified to screw and has drawn high device, in use, screw, which draws high device, can solve hydraulic pressure system System load-measuring device poor synchronization problem;And it is unreliable that the pulley for also overcoming tether assemblies in the prior art occurs Property;Furthermore device is drawn high using screw, overall cost can be reduced, reduces overall volume, mitigates overall weight.So that this The detection device that invention provides has the advantages that easy to operate and safe operation process performance is high, while screw draws high device and obtains Measure data precision higher.
2nd, the data acquisition display instrument that the present invention is set, it is possible to achieve the value of thrust and meter of real time inspection force cell 6 Calculate the coefficient of balance value of surveyed elevator.
3rd, upper fixture 1 of the invention is divided divides for lower-left fixture block for upper left fixture block 11 and upper right fixture block 12, same fixture 2 at present 21 and bottom right fixture block 22, when installation, can use upper left fixture block 11 and lower-left fixture block 21 to form left-half fixture, using upper right Fixture block 12 and bottom right fixture block 22 form right half part fixture, so that the present invention can be divided into two entirety, when mounted, directly Connect two parts to dress, save the set-up time.
4th, screw of the invention draws high device and is divided into ladders in painting screw 3 and ladders in painting nut 4, can be drawn high in order to screw The operation of device, and can according to the characteristics of traction rope section, can traction rope section folded by flexible modulation length.
5th, the bearing that the present invention is set, can reduce frictional force between ladders in painting nut 4 and upper fixture 1 to greatest extent.
6th, the present invention is equipped with installation in the both sides of upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22 Ear, and installation through-hole is equipped with mounting ear, so reduce the usage quantity of screw rod 8 and nut, while be also convenient for entirety Installation.
7th, the interior cushion block 7 designed of the invention and the holding tank 71 that is designed on interior cushion block 7 etc., can increase friction coefficient; In addition interior cushion block 7 is placed directly within upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22, can be reduced interior The volume of cushion block 7.
8th, force cell 6 of the invention selects S type force cells, so can directly borrow S type force cells Installation position up and down, eliminate unnecessary connector so that overall structure of the present invention is more simple.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature Case is realized.Therefore, embodiment disclosed above, all things considered, is all merely illustrative, not the only.Institute Have within the scope of the present invention or be included in the invention in the change being equal in the scope of the present invention.

Claims (10)

1. a kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw, it is characterised in that including upper fixture, lower folder Tool, ladders in painting screw, ladders in painting nut and force cell;
The upper fixture, for clamping the top of selected traction rope section;
The lower fixture, for clamping the lower section of selected traction rope section;
The ladders in painting screw is moving up and down to be sleeved in the upper fixture;
The ladders in painting nut is socketed on the ladders in painting screw and positioned at the top of the upper fixture;
The force cell is installed between the ladders in painting screw and the lower fixture, for measuring the ladders in painting screw With the pulling force between the lower fixture.
2. the elevator no-load coefficient of balance detection device according to claim 1 that formula is drawn high based on screw, it is characterised in that Further include:
Data acquisition display instrument, is connected with the force cell, for reading the value of thrust of the force cell, and calculates Go out the coefficient of balance value of surveyed elevator.
3. the elevator no-load coefficient of balance detection device according to claim 1 that formula is drawn high based on screw, it is characterised in that:
The upper fixture includes upper left fixture block and upper right fixture block, the top of selected traction rope section be located at the upper left fixture block and Between the upper right fixture block;
The lower fixture includes lower-left fixture block and bottom right fixture block, the lower section of selected traction rope section be located at the lower-left fixture block and Between the bottom right fixture block.
4. the elevator no-load coefficient of balance detection device according to claim 1 or 2 that formula is drawn high based on screw, its feature are existed In further including:
Connecting rod, between the force cell and the lower fixture.
5. the elevator no-load coefficient of balance detection device according to claim 1 or 2 that formula is drawn high based on screw, its feature are existed In further including:
Bearing, an annular groove is equipped with the upper end of the upper fixture, and the bearing is installed in the annular groove of the upper fixture, The outer ring of the bearing contradicts with the upper fixture and connects;The inner ring of the bearing is contacted with the ladders in painting nut;
The internal diameter of the inner ring of the bearing is more than the diameter of the ladders in painting screw.
6. the elevator no-load coefficient of balance detection device according to claim 3 that formula is drawn high based on screw, it is characterised in that:
The ladders in painting nut is two, and the ladders in painting screw is two, and the force cell is two;
Wherein a set of ladders in painting screw, the force cell be installed on the upper left fixture block and the lower-left fixture block it Between, the another set of ladders in painting screw, the force cell are installed between the upper right fixture block and the bottom right fixture block;Two A force cell is respectively used to the pulling force between measurement two the ladders in painting screws and force cell.
7. the elevator no-load coefficient of balance detection device according to claim 3 that formula is drawn high based on screw, it is characterised in that Further include:
Interior cushion block, is equipped with the holding tank that multiple tracks matches with traction rope section on the interior cushion block;
Installed in the clamping face centre bit of the upper left fixture block, the upper right fixture block, the lower-left fixture block and the bottom right fixture block Fluted, the interior cushion block is embedded in the upper left fixture block, the upper right fixture block, the lower-left fixture block and the bottom right fixture block respectively Groove in and the holding tank of the interior cushion block is clamped hoist ropes.
8. the elevator no-load coefficient of balance detection device according to claim 7 that formula is drawn high based on screw, it is characterised in that:
Multiple tracks form friction pattern is equipped with the cell wall of the holding tank.
9. the elevator no-load coefficient of balance detection device that formula is drawn high based on screw according to claim 1,2 or 3, its feature It is:
The force cell is S type force cells.
10. the elevator no-load coefficient of balance detection device according to claim 3 that formula is drawn high based on screw, its feature are existed In:
Mounting ear is equipped with the both sides of the upper left fixture block, the upper right fixture block, the lower-left fixture block and the bottom right fixture block, and Installation through-hole is equipped with mounting ear, the upper left fixture block and the upper right fixture block are installed together by bolt and nut, described Lower-left fixture block and the bottom right fixture block are installed together by bolt and nut.
CN201610158430.5A 2016-03-18 2016-03-18 A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw Active CN105905720B (en)

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CN106429686A (en) * 2016-10-26 2017-02-22 广州特种机电设备检测研究院 Elevator no-load balance coefficient detection device based on motor driving
CN107043055A (en) * 2017-04-06 2017-08-15 广州特种机电设备检测研究院 A kind of uncharged elevator overload closing detecting apparatus

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CN204150834U (en) * 2014-08-26 2015-02-11 广州特种机电设备检测研究院 Elevator no-load equilibrium factor detecting device
CN105181006B (en) * 2015-05-04 2017-11-07 长春大学 A kind of device for measuring tension of band
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